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[![Build Status](https://travis-ci.org/fgnass/uniqs.svg?branch=master)](https://travis-ci.org/fgnass/uniqs) ### Tiny utility to create unions and de-duplicated lists. Example: ```js var uniqs = require('uniqs'); var foo = { foo: 23 }; var list = [3, 2, 2, 1, foo, foo]; uniqs(list); // => [3, 2, 1, { foo: 23 }] ``` You can pass multiple lists to create a union: ```js uniqs([2, 1, 1], [2, 3, 3, 4], [4, 3, 2]); // => [2, 1, 3, 4] ``` Passing individual items works too: ```js uniqs(3, 2, 2, [1, 1, 2]); // => [3, 2, 1] ``` ### Summary * Uniqueness is defined based on strict object equality. * The lists do not need to be sorted. * The resulting array contains the items in the order of their first appearance. ### About This package has been written to accompany utilities like [flatten](https://npmjs.org/package/flatten) as alternative to full-blown libraries like underscore or lodash. The implementation is optimized for simplicity rather than performance and looks like this: ```js module.exports = function uniqs() { var list = Array.prototype.concat.apply([], arguments); return list.filter(function(item, i) { return i == list.indexOf(item); }); }; ``` ### License MIT